Liquid fuel burner base



- PF 1941- I F. H. R. slLyA 2,257,431

LIQUID FUEL BURNER BASE Filed June 11, 1940 Patented Sept. 30, 1941 r UNITED STATES PATENT OFFIC 2,257,431 r LIQUID FUEL BURNER. BASE Francisco Hilario Ribeiro Silva, Fall River, Mass. Application June 11, 1940, Serial No. 339,880 1 Claim. (01. 158-87) This patent application is a continuation in part of my patent application Serial No. 135,159,

filed April 5, 1937, for an Oil burner.

This invention relates to a liquid fuel burner base.

The principal object of my invention is to provide new features of construction in an oil burner base that makes possible a steady uniform supply of liquid fuel to a plurality of oil burning channels.

Another object is to provide means that will definitely localize and confine the burning areas of said base to said oil burning channels in a construction that provides for the emission of oil in said base at feeding points other than said channels.

A further object is to provide such an improved construction that is simple and inexpensive and is so easily understandable that a layman user of my oil burner can readily and conveniently clean the oil passages out or otherwise service it whenever desired.

The foregoing and other objects which will appear as the nature of the invention is better understood, may be accomplished by a construction such as is disclosed by the drawing and specification. The nature of the invention is such as to render it susceptible to changes and modifications, and, therefore, I am not to be limited to said disclosures; but am entitled to all such changes therefrom as fall within the scope of my claim.

In the drawing:

Figure 1 is a top view of my oil burner base.

Figure 2 is a bottom view thereof.

Figures 3, 4 and 5 are sectional views taken on the lines 3--3, 44 and 5-5 respectively of Fi ure 1.

Figure 6 is a perspective view of the protector member used with my oil burner base.

As illustrated, my oil burner base has a central fuel-receiving portion l having an opening II in the interior thereof extending through to its lower extremity where said portion 10 is screwthreaded to receive a supporting member l2. At the side of said fuel-receiving portion I0 is a screw-threaded opening l through which the fuel supply enters and passes into said opening H through a supply pipe l6. These connecting parts to my fuel-receiving portion [0 may be varied in size, shape and type, of course.

Extending from said fuel-receiving portion H) are fuel supply distributing arms 20 each having an oil passage or hole 2! extending therethrough in communication with said chamber opening I I.

I find it desirable in actual practice to provide four of these in a burner base. for a household range; but their number can be varied as desired.

Said fuel supply arms 20 extend to an open combustion chamber 22 which has a bottom 23, an outside wall 24 having a shoulder portion 25 formed therein, and intermediate interior walls 26 and 21 spaced apart laterally and leaving arcuate-shaped openings 28 that extend through said bottom 23 to provide air drafts through my burner base. Said interior walls 26 and 21 have shoulder portions 29. Said walls 26 and 21 are connected at their ends by end portions 30 thereby providing hollow arcuate formations 31 that are spaced apart endwise, leaving intermediate portions 32 between them which are part of said bottom 23. An innermost, interior wall 35 also has a shoulder portion 36. Said shoulder portions 25, 29 and 36 are used to support the usual sheet metal shells commonly used.

Between said wall 24 and arcuate walls 26 an oil burning channel 39 is formed, while between said arcuate walls 21 and said wall 35 another oil burning channel 40 is formed.

Said holes 2| in said supply arms 26 communicate with entrance holes 42' made in said combustion chamber bottom 23 at said intermediate portions 32, so that oil is supplied through said entrance holes 42 to said combustion chamber 22 at said bottom 23 between said channels 39 and 40 whence it flows over the surrounding portions of said bottom 23 directly to said channels where it is burned. This arrangement makes it easier to clean said holes 21 in said supply arms 20 without having to clear away accumulated carbon or dirt in said channels 39 and 40 because said entrance holes 42 are spaced from said channels and will not be obstructed by carbon from said channels dropping into them. Carbon accumulates mostly where the oil actually burns, which is in the said channels 39 and 40, and I use protector members 45 to prevent burning of the oil in the said bottom portions that surround said entrance holes 42 before the oil reaches said channels and to otherwise protect said holes 42.

Said protector members 45 have a top portion 46, two shoulder extension portions 41 that are below and extend beyond said top at opposite sides thereof, and a bottom portion 48 that is narrower than said top portion 46 and said extension portions 41, thus leaving shoulder portions 49 formed below said top portion 46 and said extension portions 41.

Formed in the extremities of said end portions 30 are shoulder portions 5|, which are lower than said shoulder portions 29 and which are adapted to receive and support said shoulder portions 49 of said protector members 45, thereby supporting said protector members in a position directly over said holes 42 and the surrounding portions of said bottom 23. The distance between said shoulder portions 5| and said combustion chamber bottom 23 is slightly greater than the distance between said protector member shoulder portion 49 and the lowest point of said bottomportion 48 so that there is a slight space above said entrance holes 42, as well as the surrounding pertion of said bottom 23, and said protector member 45, so as not to impede the fiow ofliquid fuel to said channels 39 and 40, but this space is too small to permit burning of said fuel to take place under said protector member'45. -The-top surface of each said shoulder extension portion 41 is at substantially the same level as said shoulder' portions 29 thereby also providing a supporting.

surfacefor the aforementioned sheet metal shells commonly used. l i

At the center of my oil burner base above. said central portion [Otis an opening 53 which is enclosed by said interior wall 35, and by the top spaced above the bottoms of said burning areas,

the base having a central oil supply with branches leading upward and discharging in the passages between said burning areas, and rebated protector pieces formed to fit said ledge seats and located so as to constitute shields for the discharge ends of said oil supply branches while permitting free passage of oil thereunder, and also upon removal thereof permitting the insertion of a tool for cleaning out said oil supply branches and passages.

FRANCISCO HILARIO RIBEIRO SILVA. 

